Tenable Holdings, Inc. (NASDAQ: TENB) is a cybersecurity company specializing in exposure management, founded in 2002 by Ron Gula, Jack Huffard, and Renaud Deraison. The company is headquartered in Columbia, Maryland.
Products
Tenable is best known for Nessus, one of the most widely deployed vulnerability scanners in cybersecurity. Co-founder Renaud Deraison created Nessus in 1998, and it has been a foundational tool for security teams worldwide ever since.
The company’s platform includes Tenable One as an exposure management platform unifying visibility across IT, cloud, and OT. Tenable Nessus remains the industry-standard vulnerability scanner, while Tenable Vulnerability Management provides cloud-based vulnerability assessment. Tenable Cloud Security covers CNAPP and cloud posture management, Tenable OT Security handles operational technology and industrial control system security, and Tenable Identity Exposure monitors Active Directory security.
Financials
Tenable’s 2024 annual revenue reached $900 million with 13% year-over-year growth. Revenue guidance for 2025 is $988 to $992 million. The company serves approximately 44,000 customers, including 65% of the Fortune 500, and has a market cap of around $2.6 billion.
Industry Standing
Tenable was one of only two vendors named a 2025 Customers’ Choice in the Gartner Peer Insights Voice of the Customer for Cloud-Native Application Protection Platforms (CNAPPs). In December 2025, Tenable appointed former Microsoft security executive Vlad Korsunsky as CTO.
The passing of former CEO Amit Yoran in January 2025 marked a significant moment for the company. CFO Stephen Vintz and COO Mark Thurmond served as interim co-CEOs during the transition period.